Evaluation of a surveillance system
How can we measure a surveillance system?
Steps of an evaluation
- Understand the trigger
- Plan the evaluation
- Perform the evaluation
- Propose an action plan
Typical triggers for an evaluation?
- Missed outbreak
- Increased disease importance
- Occurrence of new public health event
- Cost saving
- Requirement to evaluate (IHR)
- New technology
What attributes should be monitored?
- Depends on the trigger
- Many attributes are costly
- Keep the balance of attributes in mind
![]()
Propose an action plan
- An evaluation is objective oriented
- It should focus on improving the system